Ceiling fan



FIG. 1 is a lower front side perspective view of a ceiling fan showing my new design;

FIG. 2 is a front side view thereof;

FIG. 3 is a rear side view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a top view.

The broken lines showing of the ceiling fan blades and ceiling canopy and downrod in FIGS. 1-5 are for illustrative purposes and form no part of the claimed design. 

CLAIM The ornamental design for a ceiling fan, as shown and described. 